I am java developer, my application need to tweet some news from corporative portal.
For development purposes I am trying to use my personal twitter account @djudikator_adun for checking how things work.
I have filled and send the development application for approve on December 27 of 2018.
I didn’t receive any confirmation emails about it or emails with questions (I looked in Spam folder also).

So then it will be possible to receive approve/decline decision for my development application?

Hello @djudikator_adun - thanks for your application. I can confirm that your application is still under review. It is possible that the application review process is slightly slower than normal due to the recent holiday. Please be patient and check your inbox for an email from us over the next few days.